Structure for conducting and cooling high-temperature superconducting magnet
A conduction refrigeration, high temperature superconducting technology, applied in superconducting magnets/coils, refrigerators, magnetic objects, etc., can solve the problems of large temperature gradient and slow cooling speed
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[0034] Taking the conduction cooling scheme of 100kJ / 50kW SMES magnet as an example to introduce the present invention, the design requires that the time required for the high temperature superconducting magnet to cool down from 20°C to 20K should not exceed 8 hours. At 20K, the temperature rise of the magnet during the process from no-load to 100kJ energy storage within 15s does not exceed 5K. When performing 50kW power exchange at 20K, the temperature rise per second does not exceed 2K.
[0035] The main parameters of the 100kJ / 50kW SMES magnet are shown in Table 1
[0036] Table 1 Main parameters of 100kJ / 50kW SMES magnet
[0037] superconducting tape
Bi-2223
Operating temperature
20K
Inductance value
11.9H
Maximum working current
129A
magnet structure
single solenoid
number of superconducting biscuits
28
superconducting biscuit inner diameter
340mm
Superconducting double cake oute...
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